Hydraulic distributor. Am I correct?

[ArtMech]

You're welcome. I had a swedish document describing this but I now also found it in english, here you go:

https://www.dropbox.com/s/9tfnju1uhr0xesv/Parker VOAC HV07_Series.pdf?dl=0

BR /Marcus

Thank you Marcus for the link, which enlightened me so much.